People have been dealing with this for a long time it seems, and after much complaining in my Discord server I've found what will hopefully be a solution to anyone's problem with this on account of the new Nvidia drivers messing with NwN.

It's the last known working version of the drivers that doesn't cause these problems. It worked for me since Nvidia only lets you auto-backdate by 1 version, and that version is no longer the one above.Enjoy!